22
Troubleshooting
Problem Possible cause Remedy
The power doesn’t start
Panels signal light (green) is not ignited
Aux transformer T002 Chech aux. Transformer T002
Secondary voltage between connectors
X8/1-X8/2. (approx. 23 Vac)
Control card A001 If aux. Transformer secondary voltage
Is approx. 23 Vac, then replace control
card A001
Th net fuses blow when starting
machine
Faulty primary circuit semiconductor Check the primary side semiconductors.
See IGBT-testing on page 23
Aux. transformer T002 Check aux. Transformer T002 condition
Only program version is showing
nn display
Membrane panel is broken
Check membrane panel functionality.
Unconnect membrane connection from
Panel card and check machine
functionality
The power source doesn’t deliver
full power
A faulty primary rectifier V9 Check the primary rectifier condition and
solderings
A faulty smoothing capasitors Check smoothing capasitors condition
And solderings
A faulty secondary rectifier Check the secondary diodes and
solderings
A faulty control card A001 Change control card A001
TIG-high frequency spark doesn’t
ignite
A faulty spark generator card A002 Check A002/X2-connector supply voltage
Change spark generator card
Membrane panel flat cabel is broken
A faulty Spark generator card A002
Change membrane panel
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